//
//  NSArray+Extension.h
//  TableDemo
//
//  Created by jutuo on 2020/3/24.
//  Copyright © 2020 jutuo. All rights reserved.
//

#import <Foundation/Foundation.h>

NS_ASSUME_NONNULL_BEGIN

@interface NSArray<__covariant ObjectType> (Extension)
- (nullable ObjectType)objectOrNilAtIndex:(NSUInteger)index;
@end

@interface NSMutableArray (Extension)
- (void)removeFirstObject;
//插入
- (void)insertObjects:(NSArray *)objects atIndex:(NSUInteger)index;
//反转
- (void)reverse;
@end
NS_ASSUME_NONNULL_END
